Contains the following types of materials: correspondence, personnel documents, awards / certificates, clippings, newspapers, magazines, organizational documents, reports / studies, books / manuals, maps / charts, ephemera, poetry, telegrams, biography, music. Contains information pertaining to the following wars: Civil War, Late Indian Wars, Spanish-American War. Contains information pertaining to the following military units: 40th Massachusetts Volunteer Infantry; 10th Cavalry. General description of the collection: The Henry papers include papers on his Civil War service as colonel and brevat brigader general; monographs on various battles; information on his service during the late indian wars; newspaper clippings; newspapers; service as governor general of Puerto Rico; and clippings on his death and funeral.